Typical hardness is HRB 68 - HRC 32

7/8 x 6 Reduced Shank Drill Bit Cobalt (1/2 Shank)

10 x 4 Phillips Bugle Fine Drywall Screws Phosphate Coated - Carton (800)

1-14 Slotted Hex Nut Zinc Plated

1 1/4-7 x 3 1/2 Flat Socket Cap Screw Alloy

1/4-20 x 1 1/4 Grade 5 Hex Cap Screw Plain Domestic USA (1900) F436 Flat Washers Plain Typical hardness is HRB 681 4 20 x 1 1 4 Grade 5 Hex Cap Screw Plain Domestic USA (1900). Grade 5 Hex Cap Screws are manufactured in the USA from medium carbon steel. Our Grade 5 material meets or exceeds SAE J429 Grade 5 specifications. All products are manufactured with rolled threads. Typical hardness on diameters 1 4 to 1 inch is HRC 25 34. On diameters over 1 inch to 1 1 2 hardness will range from HRC 19 30. Tensile strength for diameters 1 4 to 1 inch is a minimum of